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Last name Viengsak (Viengsak
) , all over the world, is an extremely rare cognomen. Much more frequently, Viengsak is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Viengsak | Thailand, United States |
Suwan, Soukphakdy, Khousavath, and Douangmavongsa